Preferred: Whole blood-Lavender top tube; Fasting
Alternate: Serum-SST; Fasting
Test Directory
4241 Homocysteine
Specimen Type
Specimen Stability
Reference Range
7 days 2-8° C
3.7-13.9 umol/L
Specimen Requirements
Preferred amount: 1.0 mL Plasma or Serum
Minimum amount: 0.5 mL Plasma or Serum
Minimum amount: 0.5 mL Plasma or Serum
Method
Immunochemiluminometric(ICMA)
Schedule
Mon-Sat
Turn-Around Time
24hrs; Also offered STAT at an additional charge
Instructions/Notes
Centrifuge required?: Yes. Centrifuge and separate from red cells within 1 hour of collection
Fasting required?: Yes
Special Instructions: Samples should be stored on ice between the time of sampling and centrifugation.
Fasting required?: Yes
Special Instructions: Samples should be stored on ice between the time of sampling and centrifugation.
Clinical Utility
To screen patients who may be at risk for thrombosis, heart disease and stroke.
CPT Codes
83090
